Common ancestry and evolutionary trees | Evolution | Middle school biology | Khan Academy скачать в хорошем качестве

Common ancestry and evolutionary trees | Evolution | Middle school biology | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/m... Evolutionary trees model the relationships between lineages and their common ancestors. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate Volunteer here: https://www.khanacademy.org/contribute Credits: “Feral pigeon head close-up” by Alexis Lours (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Pigeons on the roads of Old city, Hyderabad” by iMahesh (CC BY-SA 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Tyrannosaurus rex, Palais de la Découverte, Paris” by David Monniaux (CC BY-SA 3.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Stegosaurus stenops (reconstruction)” by DataBase Center for Life Science (DBCLS) (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Brachiosaurus altithorax (reconstruction)” by DataBase Center for Life Science (DBCLS) (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Archaeopteryx lithographica (reconstruction)” by DataBase Center for Life Science (DBCLS) (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Anchiornis martyniuk” by Matt Martyniuk (CC BY 3.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Feral pigeon (Columba livia domestica)” by Lewis Hulbert (CC BY-SA 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... “Brown Mesite - Ranomafana - Madagascar_MG_1281” by Francesco Veronesi (CC BY-SA 2.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Double-banded Sandgrouse (Botswana)” by Marie de Carne (CC BY-SA 3.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “Tyrannosaurid specimen FMNH PR308 on display at the Field Museum of Natural History in Chicago, Illinois, USA” by Evolutionnumber9 (CC BY-SA 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... “India - Delhi girls chasing doves” by Jorge Royan (CC BY-SA 3.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://creativecommons.org/licenses/... “A rock pigeon photographed at Ed Fountain Park in Las Vegas, Nevada” by Noah Wulf (CC BY-SA 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi...